nested-TAD-detection

Detect nested TAD structures from Hi-C mcool files using OnTAD.

12|3|Updated Nov 4, 2025
One-click install
npx skills add https://github.com/BIsnake2001/ChromSkills --skill nested-tad-detection
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: nested-TAD-detection
Source: https://github.com/BIsnake2001/ChromSkills/tree/main/31_toolBased.nested-tad-detection
Command: npx skills add https://github.com/BIsnake2001/ChromSkills --skill nested-tad-detection

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This skill enables detection of nested TAD structures from Hi-C data using OnTAD, starting from multi-resolution cooler files (.mcool, .cool) and producing organized TAD calls for downstream analysis.

Core Features & Use Cases

  • Extract a dense Hi-C matrix for a chosen chromosome and resolution from an mcool/cool/hic file.
  • Run OnTAD to identify hierarchical TADs and sub-TADs, and generate BED-like and annotation outputs.
  • Validate matrix quality and standardize OnTAD results for integration with downstream analyses (e.g., boundaries, regulatory features).

Quick Start

Provide the Hi-C mcool path, chromosome name, and resolution to begin nested TAD detection.

Frequently Asked Questions about nested-TAD-detection

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I detect nested TADs from Hi-C data using an mcool file?▼

To detect nested TADs from Hi-C data, provide your .mcool file path, target chromosome, and resolution. The skill extracts a dense matrix and runs OnTAD to identify hierarchical TADs and sub-TADs, generating BED-like outputs.

Can I call hierarchical TADs and sub-TADs from a .cool or .hic file?▼

Yes, hierarchical TAD calling supports .mcool, .cool, and .hic Hi-C inputs. You specify the chromosome and resolution to extract a dense matrix, then OnTAD annotates the nested TAD structures and produces standardized BED-like outputs.

What is the best way to extract a chromosome-specific dense matrix for OnTAD?▼

The best way to extract a dense matrix for OnTAD is by supplying the Hi-C file path, chromosome name, and resolution. This skill handles the extraction from multi-resolution cooler files, preparing the input required for nested TAD detection.

Do I need cooler tooling installed to run OnTAD for nested TAD detection?▼

Yes, an environment with cooler and OnTAD tooling is required. The process depends on cooler to extract dense matrices from your Hi-C files before OnTAD runs the hierarchical TAD annotation and generates the final BED-like output files.

What outputs does OnTAD generate when identifying nested TAD boundaries?▼

When identifying nested TAD boundaries, OnTAD generates organized BED-like files and annotation outputs. These standardized results detail the hierarchical TAD and sub-TAD boundaries, enabling direct integration with downstream regulatory feature analyses.

Are there limitations when running nested TAD detection across multi-resolution Hi-C data?▼

Nested TAD detection across multi-resolution Hi-C data requires selecting a single chromosome and resolution per run. The skill validates matrix quality before running OnTAD, but processing is constrained to chromosome-specific analyses rather than whole-genome batches.